goldsmith



(No Model.)

2 Sheets8heet 1.

P. 0. WEIR & N. 0. GOLD$MITH. SWITCH STAND.

No. 407,755. Patented July 23, 1889.

(No Model.) 2 Sheets-Sheet 2.

F. 0. WEIR & N. 0. GOLDSMITH. SWITCH STAND.

No. 407,755. I Patented July 23, 18 89.

UNITED STATES PATENT OFFICE.

FREDRIC C. \VEIR AND NATHANIEL O. GOLDSMITH, OF CINCINNATI, OHIO,ASSIGNORS TO THE WVEIR FROG COMPANY, OF SAME PLACE.

SWITCH-STAN D.

SPECIFICATION forming part of Letters Patent No. 407,755, dated July 23,1889.

Application filed March 30, 1889. Serial No. 305,469. (No model.)

To all whom it may concern: Be it known that we, FREDRIO C. (IE1 andNATHANIEL O. GOLDSMITH, citizens of the United States, and residents ofCincinnati in the county of Hamilton and State of Ohio, have inventedcertain new and useful Improvements in Switch-Stands, of which thefollowing is a specification.

The object of our invention is to provide a three-throw splitswitchstand, which is cheap and convenient of construction, the features ofwhich will be fully set forth in the description of the accompanyingdrawings, making a part of this specification, in which Figure 1 is atop plan View of our improvement with the top section of the casingremoved. Fig. 2 is a side elevation of the same. Fig. 3 is a diagramView of the inclined slots. Fig. 4 is a top plan .view showing the leverin three positions. Fig. 5 is an end elevation of Fig. 4. Fig. 6 is anend elevation of a modification.

In Fig. 1 of the accompanying drawings we have shown our improvedswitch-stand as connected to two split-switch rails, A representing themain or stationary rail, B one of the movable rails, and C the innermoving rail. The opposite rail of said pairs are not shown, but theswitch-bars are connected to both rails of the switch in the usualmanner.

1 represents the switch-bar connected with the switch-rails B, and 2 theswitch-bar connected to and operating the switch-rails C.

3 represents the drive-bar hinged to switchbar 1, and 4 a drive-barhinged to switchbar 2.

5 represents a stud secured to drive-bar 4 and engaging with the slot 6of the drum D. Said drum journals in the case E, which is of the samegeneral construction as that shown in Letters Patent of the UnitedStates No. 251,235, granted F. C. W'eir, August 19, 1886.

Drive-bar 3 is provided with a stud 8, engaging with slot 7, formed insaid drum D. A plan View of said slots is shown in Fig. 3, which willrepresent the drum drawn out in a horizontal plane. It will be observedthat the working portion of the slots are formed of inclined portions,and that the straight portions of said slot are idlers, and that theworking portion of slots 6 and 7 start upon the opposite sides of thedrum and are so arranged that as stud-pin 5 is traveling in the inclinedor working portion of slot 6 the stud 8 is traveling as an idler in slot'7, and vice versa. The inclines are such as to move one of the switchesduring one-quarter of the revolution of the axial shaft 9.

10 represents a lever for turning the drum D upon its axis. It is shownas hinged to the aXis. WVhcn the drum and rails are in position shown inFig. 1, the handle 10 is upon the right side, as shown in Fig. 5. Whenthe handle 10 is raised into the vertical position, the stud 5 hastraveled up the inclined plane of slot 6 and moved the switchrails Cinward, opening said switch. Now, if said lever 10 be stopped or lockedin this position, switch-rails C are opened and B closed. If the lever10 is turned over into the left side, as shown in dotted lines, Fig. 4c,the stud 8, which has been running as an idler in the straight portionof slot 7 during the first quarter of the revolution, has reached theincline of said slot and then moves through the incline and throwsswitch-rail B the required distance and opening it from contact withrail A, and both switch-rails C and B are open and track A is ready forthe passage of trains.-

A B C represent the positions of the lever 10 for corresponding use ofthe rails A B C. In order to lock the switch in the upward position, wehave provided a bracket 11, in which is pierced a slot 12 of sufficientwidth to allow the handdever 10 to drop down into said slot when it isinan upright position and lock it there.

In Fig. 6 we have shown a modified form of locking, which consists ofthe semicircular guide 12, preferably made of two arms, between whichthe shank of lever 10 passes.

13 14 15 represent pin-holes for locking said lever in either of thepositions.

16 represents the target-shaft; 17, the target. bevel 18 on the shaft9and the bevel19 on the target-shaft 16; but these features are shown insaid former patent, with the exception that the bevels herein are ofsuch size as to move The target is turned by means of the IOO the targetappropriately with the quarterthrow of the switch-lever 10. The twoswitches C and B are alternately operated, one at eachquarter-revolution of the drum D, by means of the two slots 6 and 7 andthe studs and drive-bars connected thereto, the device being at oncecheap, simple, durable, and effective.

Havingdesoribed our invention, what we claim is 1. In a three-throwswitch-stand, the horizontal rotating drum having the slots 6 and 7,each formed with an inclined working portion, from which runs a straightidle portion substantially at right angles to the axis of the drum, incombination with drivebars 3 and 4:, connected with different-switchbarsand having studs which respectively engage the slots, substantially asdescribed.

2. In a three-throw switch-stand, the horizontal drum having twoindependent slots 6 and 7, in combination with the casing, the twoparallel drive-bars 3 and 4, movable in for the use of the main andswitch rails, substantially as described.

In testimony whereof we have hereunto set our hands.

FREDRIC C. WEIR. NATHANIEL O. GOLDSMITH.

Witnesses:

J'. WATSON SIMs, '1. SIMMONS.

